servlet: how to save uploaded file

Asked Feb 10 '16 at 22:01

Active Feb 10 '16 at 22:01

Viewed 24 times

I am newbie to servlets, I want to save an uploaded image to a dir in the web directory, here is my code:

String fileName = p.getSubmittedFileName();
InputStream fileContent = p.getInputStream();
File uploads = new File(this.getServletContext().getRealPath("/uploads"));

File file = File.createTempFile("somefilename-", ".ext", uploads);

try (InputStream input = p.getInputStream()) {
    Files.copy(input, file.toPath(), StandardCopyOption.REPLACE_EXISTING);
}

where p is request.getPart().

The file is posted correctly, but I can't save it to the dir, why?

asked Feb 10 '16 at 22:01

Mohammad

3,449
6
48
75

Do you get an error or exception anywhere? – Miserable Variable Feb 10 '16 at 22:25
@MiserableVariable no, there are no exceptions – Mohammad Feb 10 '16 at 22:30
use remote debugging or log statements to find out which part of your code is failing – wero Feb 10 '16 at 22:52
Do you need to create the `uploads` directory? Try to create a file with static content, e.g. with the line `testing` first. – Miserable Variable Feb 10 '16 at 22:56
@MiserableVariable the uploads dir is already exist in the web content folder. – Mohammad Feb 11 '16 at 07:14
1

See [this](http://stackoverflow.com/questions/18664579/recommended-way-to-save-uploaded-files-in-a-servlet-application) post. – Mehrdad Nurolahzade Feb 11 '16 at 08:11
1

Again a getRealPath() victim. Never use that method. Period. Any tutorial source which says otherwise must be blacklisted. – BalusC Feb 11 '16 at 08:52
@BalusC the answer given in the question that you provided, didn't solve my problem, could you please give me an example ?! – Mohammad Feb 11 '16 at 09:21
Simply don't save in web directory as explained by the answer. There it is not for. – BalusC Feb 11 '16 at 09:48

servlet: how to save uploaded file

0 Answers0